<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>
  <body>
    <div class="dynaminc_background">my dynamic background</div>
    <style>
      body {
        margin: 0;
        padding: 0;
        background-image: linear-gradient(
          125deg,
          hotpink,
          teal,
          orange,
          rgb(43, 226, 83),
          yellow,
          purple
        );
        background-size: 400%;
        animation: dynamicgo 15s infinite;
      }
      @keyframes dynamicgo {
        0% {
            background-position: 0% 50%;
        }

        50% {
            background-position: 100% 50%;
        }
      }
      div {
        color: white;
        text-align: center;
        vertical-align: center;
        text-transform: uppercase;
        margin: 200px 0;
      }
    </style>
  </body>
</html>
